CN105471747B - A kind of intelligent router route selecting method and device - Google Patents
A kind of intelligent router route selecting method and device Download PDFInfo
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- CN105471747B CN105471747B CN201510828560.0A CN201510828560A CN105471747B CN 105471747 B CN105471747 B CN 105471747B CN 201510828560 A CN201510828560 A CN 201510828560A CN 105471747 B CN105471747 B CN 105471747B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
- H04L45/74591—Address table lookup; Address filtering using content-addressable memories [CAM]
Abstract
The present invention is suitable for data communication field, provide a kind of intelligent router route selecting method and device, the described method includes: searching the basic routing table according to destination address entrained in the data message to routing forwarding, the line number in the 2-d index table is obtained；Wherein, the line number of each destination address and corresponding destination address in the 2-d index table is stored in basic routing table；Search the row number in corresponding 2-d index table in the sublist of corresponding types into the intelligent route selection table according to routing policy；According to the line number and row number in the 2-d index table of acquisition, searches the 2-d index table and obtain mapping value；The network address of next-hop is searched in interface map list according to the mapping value.Intelligent route selection, which changes conventional routing table, to extend intelligent rules based on the mode that destination address is forwarded, and by the combination of the two, realize intelligence forwarding.
Description
Technical field
The invention belongs to data communication field more particularly to a kind of intelligent router route selecting methods and device.
Background technique
Traditional internet router be according to packet rs destination address carry out routing forwarding, this router it is general
Only classified using destination address to data packet.However, more and more Internet applications propose higher want to router
It asks, such as safety, traffic engineering, service quality of policybased routing, routed path etc..Due to lacking for conventional router framework
It falls into, so that being difficult to be innovated and develop in the service of router offer higher level.
The considerations of for network performance and reliability between two nodes there are mulitpath is very universal in network
's.But the router for possessing two or more path, how not only to guarantee using optimal path selection, but also
Guarantee that multilink bandwidth is fully utilized, improve network utilization efficiency, conventional router is realized difficult.
Did internet come into using the epoch for being king, and how operator for client provides the network service of high quality? such as
What accomplishes on-demand by given line resource is applied? for the high-quality route of operator, if operation P2P application is exactly wave
Take, current each operator will be considered to the IP for needing to lead to high-quality route using manual type or IP network section is set on the router
Static routing is set, flow lead is carried out.It is this using manual type by the message of different IP network sections by static routing by the way of
It is sent on corresponding route, labor workload is big, daily modification routing by hand；Initiative is few, only complained, just knows
IP.And it is not smart enough, omission is more, and key does not enter high-quality route using IP；Waste is more simultaneously, and non-critical application IP enters excellent
Matter route.Therefore intelligent route selection is carried out based on application to be necessary.
On egress gateways routing device, P2P is allowed, it is larger but of low quality that the business that sudden peal of thunder etc. accounts for bandwidth walks bandwidth
Link allows webpage and other crucial service traffics to walk high quality link, i.e., the applicating category according to belonging to data flow (such as P2P,
Video, webpage) it selects to route, it is realized in conventional router difficult.
On the routing device of multipath, often occur accessing the resource of a certain network, even if there are the feelings of direct routing
Under condition, due to reaching purpose across multiple and different networks to realize load balancing.Such as accessing a router has two chains
Road, a telecommunications, a connection, due to realizing load balancing, the data for access connection resource often occur export out from telecommunications
It goes, cross operator is caused to access.Cause time delay big, user's perception is also very poor.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of intelligent router route selecting method and device, to solve the prior art
Under the premise of guaranteeing most faster link as far as possible, link multipath is rationally utilized, so that network routing will become asking more efficiently
Topic.
The embodiments of the present invention are implemented as follows, on the one hand, the embodiment of the invention provides a kind of intelligent router routings
Method is stored with basic routing table, intelligent route selection table, 2-d index table and interface map list, the side in Intelligent routing system
Method the following steps are included:
According to destination address entrained in the data message to routing forwarding, the basic routing table is searched, is obtained
Line number in the 2-d index table；Wherein, each destination address and corresponding destination address are stored in basic routing table in institute
State the line number in 2-d index table；
It is searched in corresponding 2-d index table in the sublist of corresponding types according to routing policy into the intelligent route selection table
Row number；
According to the line number and row number in the 2-d index table of acquisition, searches the 2-d index table and obtain mapping value；
The network address of next-hop is searched in interface map list according to the mapping value.
Preferably, in the intelligent route selection table sublist of corresponding types include: using routing sublist and source address sublist,
In, using the row number stored in routing sublist in 2-d index table corresponding to differing transmission protocols；It is stored in source address sublist
The not row number in 2-d index table corresponding to homologous address in data message.
Preferably, the different lines of the 2-d index table correspond to different transmission requirements, and the transmission requirement includes time delay
It is minimum, remaining bandwidth is maximum, remaining bandwidth takes second place and/or remaining bandwidth is small；Wherein, the transmission requirement corresponds to the application choosing
Differing transmission protocols and/or the transmission requirement correspond to source address different in the source address sublist in way table.
Preferably, the routing policy specifically includes:
It is searched from high to low according to application routing sublist and source address sublist priority, if finding qualified
As a result, terminating the lookup of the row number in 2-d index table；Alternatively,
It is searched from high to low according to source address sublist and using routing sublist priority, if finding qualified
As a result, terminating the lookup of the row number in 2-d index table.
Preferably, the basic routing table and Intelligent routing table are stored in ternary content addressing memory TCAM；It is described
2-d index table and interface map list are stored in static random access memory SRAM.
Preferably, the path for reaching destination address is generated according to the network address of the multiple next-hops found out, is specified and is visited
It observes and predicts text and tests the path；And it is switched over automatically in probe messages feedback path there are when link failure, and flow is divided
It is fitted on suitable path.
On the other hand, the embodiment of the invention also provides a kind of intelligent router channel selection devices, which is characterized in that the intelligence
Can router channel selection device include basic routing table lookup module, intelligent route selection table enquiry module, 2-d index table enquiry module,
Interface map list enquiry module and memory module, specific:
The memory module, for being stored with basic routing table, intelligent route selection table, 2-d index table and interface map list；
The basic routing table lookup module, for according to destination entrained in the data message of routing forwarding
The basic routing table is searched in location, obtains the line number in the 2-d index table；Wherein, it is stored in basic routing table each
The line number of destination address and corresponding destination address in the 2-d index table；
The intelligent route selection table enquiry module, for the son according to routing policy corresponding types into the intelligent route selection table
The row number in corresponding 2-d index table is searched in table；
The 2-d index table enquiry module searches institute for the line number and row number in the 2-d index table according to acquisition
It states 2-d index table and obtains mapping value；
The interface map list enquiry module, for searching the net of next-hop in interface map list according to the mapping value
Network address.
Preferably, the memory module specifically includes ternary content addressing memory TCAM and static random access memory
SRAM, then:
The basic routing table and Intelligent routing table are stored in TCAM；The 2-d index table and interface map list storage
In sram.
Preferably, the intelligent router channel selection device further includes detecting module, specific:
The detecting module is used for detection failure path, and when link failure occur, switches over automatically, and by flow
It is assigned on suitable path.
The beneficial effect of a kind of intelligent router route selecting method and device provided in an embodiment of the present invention includes: intelligent route selection
Intelligent rules can only be extended based on the mode that destination address is forwarded by changing conventional routing table, by the combination of the two, be realized
Intelligence forwarding.So that different types of application is walked different paths and is forwarded, the address base according to real-time update can also be realized
It is forwarded, in addition can also be achieved and safety inspection and forwarding are carried out based on source address.Intelligent route selection system can be as needed into one
Step expands routing rule, and when expansion need to only increase corresponding intelligent rules table.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of intelligent router route selecting method system interaction figure provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of intelligent router route selecting method provided in an embodiment of the present invention；
Fig. 3 is a kind of flow diagram of intelligent router channel selection device provided in an embodiment of the present invention；
Fig. 4 is a kind of Intelligent routing system forwards face provided in an embodiment of the present invention routing infrastructure schematic diagram；
Fig. 5 is a kind of Intelligent routing system control plane routing infrastructure schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of method for intelligently routing route querying flow diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As shown in Figure 1, conventional router includes control plane and Forwarding plane.Control plane is concentrated mainly on control
The operation of plane software, related resource are generated and are used；Forwarding plane includes forwarding behavior, for example is tabled look-up, and statistical tables and reports are forwarded
Text etc..Link failure, node failure etc. can cause the variation of network topology, and the flow in network is also constantly changing, and reach
The optimal path of the same destination all can because of these situations change and become no longer be it is best, IP agreement is to right
The data message received is made correctly forwarding and is determined, it is necessary to have one can reflect network topology or even traffic conditions in real time
Routing table.Control plane is exactly to allow router that can possess such routing table, and Forwarding plane is realized quick as far as possible
Data message is forwarded.Router forwarding surface and control plane cooperate, and could preferably complete forwarding task.
Conventional internet router, which E-Packets, carries out routing forwarding, this one-dimensional routing according to the purpose IP address of message
There are many limitations, more stringent requirements are proposed to router for new business.Using Intelligent routing, one-dimensional routing can solve
Problems.Intelligent routing is control forwarding grouping for greater flexibility, and routing architecture is added in other routing other informations, makes to forward
Table table entry structure becomes two dimension, and when forwarding first matches purpose prefix and guarantees accessibility, while realizing the forwarding based on various dimensions.
Intelligent routing system, can be using one piece of intelligence of extension in existing route device if necessary to compatible original route system
Energy circuit by board, to routing in need business datum, make it by Intelligent routing board, turned by Intelligent routing board
Hair can not modify original system in this way, realize Intelligent routing forwarding.For the route system that can be modified, can hand over
It changes in board or interface board and is directly realized with plate.The Forwarding plane of Intelligent routing system controls at plane and Intelligent routing
It is as shown in Figure 1 to manage interaction figure.The mode realized in various boards is similar, in subsequent description, does not distinguish the shape of different boards
Formula, it is unified to be described according to Intelligent routing system.
In Intelligent routing system, routing entry when being forwarded, in addition to destination address, it is also necessary to judge other because
Element, these factors include the information such as application type, time delay is most short, path is most short, source address, address base.Therefore, Intelligent routing system
Forwarding surface routing table in system is a 2-d index table, and destination address forms the row of 2-d index table, other factors information shape
At the column of 2-d index table.According to row and column information when forwarding, next-hop interface is searched, is forwarded.It next will be by more
A embodiment illustrates how to realize the present invention from all angles, every aspect.
Embodiment one
A kind of intelligent router routing method provided in an embodiment of the present invention is stored with basic routing in Intelligent routing system
Table, intelligent route selection table, 2-d index table and interface map list, as shown in Fig. 2, the described method comprises the following steps:
In step 201, according to destination address entrained in the data message to routing forwarding, the basic road is searched
By table, the line number in the 2-d index table is obtained.
Wherein, each destination address and corresponding destination address are stored in basic routing table in the 2-d index table
Line number.As shown in figure 4, being the incidence relation figure of each table used in intelligent router provided in an embodiment of the present invention, wherein base
A kind of forms mode of this routing table can refer in Fig. 4 shown in basic routing table.
In step 202, it is searched in the sublist of corresponding types according to routing policy into the intelligent route selection table corresponding
Row number in 2-d index table.
In the intelligent router that the embodiment of the present invention is proposed, forwarding for data, in addition to being based on prior art institute
Except the destination address of utilization, it is also necessary to intelligent route selection information is matched, in the 2-d index table being made up of this two parts information
Hold and determines forwarding outgoing interface.Intelligent route selection information is made of multiple tables, can be extended as needed, preliminary definition application choosing
Road table, address base table and source address table etc. (as shown in intelligent route selection table in Fig. 4).
In step 203, it according to the line number and row number in the 2-d index table of acquisition, searches the 2-d index table and obtains
Mapping value.
In step 204, the network address of next-hop is searched in interface map list according to the mapping value.
The intelligent route selection that the embodiment of the present invention is proposed changes what conventional routing table can only be forwarded based on destination address
Mode extends intelligent rules, by the combination of the two, realizes intelligence forwarding.So that different paths is walked in different types of application
It is forwarded, can also realize that the address base according to real-time update is forwarded, and in addition be can also be achieved and is carried out safety based on source address
It checks and forwards.Intelligent route selection system can further expand routing rule as needed, and when expansion need to only increase corresponding intelligence
Rule list.
In conjunction with the embodiment of the present invention, is searched involved in step 201-204, be specifically that reality can also be described as
Matching process, it is specific: if matching rule is fixed field, to directly adopt data+mask mode and matched；If
Matched is the unfixed feature field in position, then is matched by way of regular expression matching.After successful match, then
Choose the corresponding path priority of the application type.The priority is also embodied by " line number " and " column in embodiments of the present invention
Number ".
Compared to the routing mode of more existing router, by increasing intelligent route selection table, two in the embodiment of the present invention one
The mode for tieing up concordance list and interface map list, provides a kind of method that routing policy is more reasonable, therefore, in conjunction with of the invention real
Example is applied, there are a kind of preferred scheme, the sublist of corresponding types includes: using routing sublist and source in the intelligent route selection table
Location sublist, wherein using the row number stored in routing sublist in 2-d index table corresponding to differing transmission protocols；Source address
The not row number in 2-d index table corresponding to homologous address in storing data message in table.
Based on source address routing mode, in source address routing directory, by matching specific source address, corresponding road is obtained
Diameter priority, source address information can be realized by configuring or importing configuration mode.Utilize Intelligent routing system, source address inspection
Function can be deployed in the centre of network, i.e. intermediate router comes during can also participating in safety inspection, this makes
The ability that whole network resists attack becomes strong, takes precautions against more targeted.In addition, implementation strategy can be facilitated based on source address routing
Routing, flexibly controls data traffic forward-path.
In conjunction with the embodiment of the present invention, there are a kind of scalable approach, wherein the different lines of the 2-d index table are corresponding not
Same transmission requirement, the transmission requirement includes that time delay is minimum, remaining bandwidth is maximum, remaining bandwidth takes second place and/or remaining bandwidth
It is small；Wherein, the transmission requirement corresponds to differing transmission protocols and/or the transmission requirement in the application routing sublist and corresponds to institute
State source address different in source address sublist.
In conjunction with the embodiment of the present invention, there are a kind of scalable approach, wherein the routing policy specifically includes:
It is searched from high to low according to application routing sublist and source address sublist priority, if finding qualified
As a result, terminating the lookup of the row number in 2-d index table；Alternatively,
It is searched from high to low according to source address sublist and using routing sublist priority, if finding qualified
As a result, terminating the lookup of the row number in 2-d index table.
In conjunction with the embodiment of the present invention, there are a kind of scalable approach, wherein the basic routing table and Intelligent routing table are deposited
Storage is in ternary content addressing memory TCAM；The 2-d index table and interface map list are stored in static random access memory
In device SRAM.
Embodiment two
It is illustrated in figure 3 a kind of intelligent router channel selection device provided in an embodiment of the present invention, the intelligent router choosing
Road device includes basic routing table lookup module 11, intelligent route selection table enquiry module 12,2-d index table enquiry module 13, interface
Mapping table enquiry module 14 and memory module 15, specific:
The memory module 15, for being stored with basic routing table, intelligent route selection table, 2-d index table and interface mappings
Table；
The basic routing table lookup module 11, for according to destination entrained in the data message of routing forwarding
The basic routing table is searched in location, obtains the line number in the 2-d index table；Wherein, it is stored in basic routing table each
The line number of destination address and corresponding destination address in the 2-d index table；
The intelligent route selection table enquiry module 12, for according to routing policy into the intelligent route selection table corresponding types
The row number in corresponding 2-d index table is searched in sublist；
The 2-d index table enquiry module 13 is searched for the line number and row number in the 2-d index table according to acquisition
The 2-d index table obtains mapping value；
The interface map list enquiry module 14, for searching next-hop in interface map list according to the mapping value
Network address.
Intelligent route selection, which changes conventional routing table, to extend intelligent rules based on the mode that destination address is forwarded, and lead to
The combination of the two is crossed, realizes intelligence forwarding.So that different types of application is walked different paths and is forwarded, foundation can also be realized
The address base of real-time update is forwarded, and in addition be can also be achieved and is carried out safety inspection and forwarding based on source address.Intelligent route selection system
System can further expand routing rule as needed, and when expansion need to only increase corresponding intelligent rules table.
In conjunction with the embodiment of the present invention, there are a kind of scalable approach, wherein the memory module 15 specifically includes in triple
Content addressed memory TCAM and static random access memory SRAM, then:
The basic routing table and Intelligent routing table are stored in TCAM；The 2-d index table and interface map list storage
In sram.
In conjunction with the embodiment of the present invention, there are a kind of scalable approach, wherein the intelligent router channel selection device further includes
Detecting module, specific:
The detecting module is used for detection failure path, and when link failure occur, switches over automatically, and by flow
It is assigned on suitable path.
It is worth noting that in information exchange, implementation procedure between module, unit in above-mentioned apparatus and system etc.
Hold, due to being based on same design with processing method embodiment of the invention, particular content be can be found in embodiment of the present invention method
Narration, details are not described herein again.
Embodiment three
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided Intelligent routing and priority level initializing involved in it.It is specific:
In Intelligent routing system, each is routed there are mulitpath, and the sequence of different next-hops is illustrated and do not gone the same way
The priority of diameter.The path determined based on most short time-delay is indicated to first next-hop of each, second next-hop indicates
The next-hop of remaining bandwidth maximum path, third and later next-hop successively indicate the path of remaining bandwidth successively reduction.
Intelligent routing system can configure the fixed different path numbers of selection, if only having a paths in a routing or being less than
The different path numbers of configuration, then path insufficient section is identical as the last item path next-hop.
For the dynamic change of remaining bandwidth, Intelligent routing system needs (can set within every 5 minutes the size of remaining bandwidth
Set) once updated.
For first time delay shortest path in Intelligent routing system, then need after receiving data packet, by right
Each routing distal end destination is detected, and detection is minimum from which link Forwarding Delay.Time delay minimal path default 5 minutes
Aging afterwards, after time delay minimal path entry aging, subsequent packet will re-start detection.
Remaining bandwidth threshold value can be arranged in intelligent route selection function in time delay smallest link, once the remaining bandwidth of this link
When reaching the bandwidth threshold of setting, alarm will be generated, the flow of subsequent match to this destination network segment will select Article 2 link
(remaining bandwidth is maximum) is forwarded.
Intelligent route selection function by setting threshold mode, compensate for automatic detection mode because of most of flow from a certain when
Prolong the defect that the smallest link forwards and leads to other link idles, intelligent route selection function is made to be more applicable for the complicated net of existing net
Network environment.
Example IV
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided Intelligent routing system forwards face converting route involved in it, specific:
Different with traditional forwarding table, Intelligent routing system forwards table stores a regular collection, and each rule is one
(purpose network address, intelligent route selection information, next-hop) triple, when some message reaches, matched rule is: pressing first
The matching of purpose network address longest, obtains the subclass of a rule associated with this purpose network address, then exists again
Intelligent route selection information is matched in this subclass, is obtained the priority in path, is exported the corresponding next-hop interface of this priority
?.For forwarding surface list item, using two-dimentional routing forwarding table structure, the table being stored in TCAM by two and two storages
Table composition in sram, different list item storage locations are different, are mainly in view of search efficiency, TCAM search efficiency is high, speed
Fastly, but resource is limited, stores list item in sram without repeatedly searching, can directly be obtained according to keyword.
(1) table entry structure designs
Intelligent routing table forwarding table structural schematic diagram is as shown in figure 4, include basic routing table, intelligent route selection table, two-dimentional rope
Draw table and interface map list.
Basic routing table: a list item in TCAM, storage purpose network address information are similar with conventional routing table；
Intelligent route selection table: one or more tables in TCAM store intelligent route selection information；
2-d index table: the next hop information of index is passed through in a two-dimensional table in sram, storage；
Interface map list: a table in sram stores the map information between call number and next hop information.
(2) list item inquiry operation
For each rule (destination address, intelligent route selection information, next-hop), destination address is stored in basic routing table
In, intelligent route selection information is stored in intelligent route selection table.By destination address, basic routing table can export a line number, pass through
Intelligent route selection information, intelligent route selection information table can export a row number.By line number and row number, our accessible 2-d indexs
A cell (being exactly the line number of intelligent route selection information and the corresponding next-hop of destination address in interface map list) in table, two
Dimension concordance list can export a call number.Interface map list, available next hop information are searched by call number.It is right such as Fig. 4
In rule (1.1.2.0, ftp application, 1.1.0.3), destination address 1.1.2.0 network segment is stored in basic routing table and corresponding the
A line (with 0 behavior radix), ftp apply storage in the application routing directory in intelligent route selection table and corresponding 2nd column.In 2-d index
In table, the 1st row, the 2nd column cell call number be 2.In interface map list, the corresponding next hop information of call number 2 is
1/0/2 interface, next hop address 1.1.0.3.
In order to solve to can not find in 2-d index table according to intelligent route selection information and destination address next in some cases
Index situation is jumped, as soon as to each destination address distribution default next-hop mapping value, it is next using this default at this time
It jumps mapping value and goes for next hop information.It is uncertain both to have solved the hollow index bring forwarding of 2-d index table by this method
Factor can also be compatible with traditional route forwarding table, without doing big change to traditional forwarding table.
(3) list item updates operation
List item update is divided into list item addition, deletion and content update.Addition is first respectively according to destination address and Intelligent Selection
Road information is searched in corresponding table, is found, and corresponding line number or row number are write down, and be can not find and is then increased list item newly, distributes new row
Number or row number, while similar operations are also carried out to next-hop inside SRAM, find or newly distribute next-hop corresponding rope
Draw, index is filled out in the 2-d index table of SRAM according to the row number of the line number of purpose routing and intelligent route selection information.It deletes just
It is to be searched in corresponding table according to destination address and intelligent route selection information respectively, deletes the list item information found.It updates main
It is to update next-hop mapping table, operates fairly simple.
Embodiment five
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided Intelligent routing system control plane routing table involved in it, specific:
Intelligent routing system control plane routing table is using two-dimentional routing infrastructure.Traditional one-dimensional route system mainly passes through y-bend
Tree routes Intelligent routing system to store routing iinformation, needs to consider to be extended to two-dimentional binary tree structure.In two dimension routing
Destination address stored still according to binary tree, under each node, then it is lower hang a binary tree subtree, the node in subtree is protected
Deposit forward-path information.By one-dimensional routing<dest>be converted into two dimension routing<dest, *>, can reach two dimension routing storage compatibility
The effect of one-dimensional routing storage.It is as shown in Figure 5 in the storage organization of control plane.
In the design Storage of routing table, it is determined that it is preferential higher than the lookup of other route selection informations that destination address searches priority
Grade.In traditional routing, the case where a next-hop corresponding there are many routing address, it is contemplated that the similitude of Intelligent routing,
There is also similar problems for Intelligent routing table.Because Intelligent routing system is stored using second level binary tree, disappear to memory headroom
Loss-rate traditional routing is big, in order to reduce the consumption to memory, it may be considered that integrate to next-hop.It is utilized in next-hop integration
Indexing Mechanism, each next-hop distributes an index, the index of the next-hop relevant information is only saved in binary tree, then single again
A table is solely built, next-hop index and next-hop relevant information are saved.It is similar with the interface map list in forwarding surface forwarding table.
Intelligent route selection two dimension is routed when accurately being searched, and first accesses destination address binary tree, carries out destination address essence
Really matching after finding corresponding node, accesses the route selection information binary tree under the node, carries out route selection information and accurately matches.
When carrying out longest matching, Intelligent routing system route querying flow chart as shown in Figure 6 first accesses mesh for two dimension routing
Address binary tree, carry out the matching of destination address longest, after finding corresponding destination address node, access under the node routing letter
Binary tree is ceased, route selection information matching is carried out, route selection information successful match then terminates, and matching is unsuccessful, needs to trace back to vice-minister's mesh
Addressed nodes, access the route selection information binary tree under the node, again carry out route selection information matching.
The Intelligent routing of control plane is searched, and due to pass through avl tree lookup twice, is searched the time, is one-dimensional routing
Twice searched.For control plane, this search efficiency is also that can satisfy requirement.
The synchronization towards forwarding surface routing iinformation is controlled, only need to increase route selection information on the basis of original information.Due to
One-dimensional routing<dest>be convertible into two dimension routing<dest, *>, therefore two dimension routing synchronization be also that can be compatible with one-dimensional routing
's.
The addition of second level binary tree first searches destination node in purpose binary tree according to routing destination address, if looked for
Node is searched according to route selection information to related destination node, then in corresponding route selection information binary tree, finds and just updates, can not find
With regard to adding a node；It can not find destination node, just add a destination node, then create an intelligent route selection information two again
Fork tree, adds route selection information node.Update is exactly to search corresponding node according to destination IP and route selection information, is found just
Update the relevant informations such as outgoing interface, next-hop；It can not find and just do not operate.Deleting is also first to carry out second level binary tree search, is looked for not
To corresponding node, directly return；Corresponding node is found, route selection information y-bend tree node is first deleted, if route selection information node two
Fork tree is sky, then deletes the binary tree, then deletes destination address binary tree corresponding node, deletion finishes, if destination address
Binary tree is sky, then deletes the tree.
Embodiment six
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided the other configurations in Intelligent routing system involved in it, specific:
Intelligent routing table dominant static configuration mode is as follows.
(1) interface intelligent route selection configures: on the basis of original configuration, increasing the intelligent route selection mode of the interface, such as selects
Based on application type, based on time delay, based on source address, based on the modes such as address base.
(2) global static intelligent route selection configuration: it is based on equipment, configures global intelligent route selection mode, purpose can be reduced
The workload of interface configuration.
(3) intelligent route selection information generate: application type library, address base and source address by static configuration generation, preferably from
Outside imports corresponding file and generates, and in addition can control network by SDN equipment and distribute information, router device can pass through certain
Mode obtains relative address from SDN equipment, then in conjunction with local interface, generates local intelligent route selection information.
Embodiment seven
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided intelligent route selection mode involved in it, specific:
In Intelligent routing system, forwarding for data, other than based on destination address, it is also necessary to match Intelligent Selection
Road information determines forwarding outgoing interface by this Intelligent routing table content dimerous.By realizing Intelligent routing table, to biography
The one-dimensional routing table of system is expanded, and the reliability, compatibility and deployable of network are promoted.Intelligent route selection information is by multiple tables
Composition, can be extended as needed, preliminary definition application table, address base table and source address table etc..
It include application type, matching rule, heat source in application routing list item based on routing implementation is applied
Grade sequence number if matching rule is fixed field, such as UDP, TCP port and type, is then directlyed adopt when being matched
Data+mask mode is matched；If matched is the unfixed feature field in position, need to pass through regular expression
Matched mode is matched.After successful match, then the corresponding path priority sequence number of the application type is chosen, such as P2P class
Type priority level initializing is 5, and the type priorities grade such as voice H323 is set as 1.Routing mode based on application, can be disposably to common
Type configured, or carry out importing configuration from outside.
Based on address base routing implementation, in address base routing directory, by matching specific destination address, counted
It is converted according to the destination address of packet, and obtains corresponding path priority.Address base information can be by configuring or importing configuration side
Formula is realized.When having multiple network servers (such as different operators) support mainly for the treatment of same service, address base is enabled
Routing allows heterogeneous networks data to forward as far as possible in consolidated network, avoids across a network operation service, causes time delay height, experience poor.
Based on source address routing mode, in source address routing directory, by matching specific source address, corresponding road is obtained
Diameter priority.Source address information can be realized by configuring or importing configuration mode.Traditional network is mostly all safety inspection function
It can be placed on border router.But for more and more large-scale network attack, the resource of border router seems increasingly
It is in short supply.Using Intelligent routing system, source address audit function can be deployed in the centre of network, i.e. intermediate router can also be with
Come during participating in safety inspection, this ability for making whole network resist attack becomes strong, takes precautions against more targeted.Separately
Outside, implementation strategy can be facilitated to route based on source address routing, data traffic forward-path is flexibly controlled.
It according to the intelligent route selection characteristic of Intelligent routing, can will go, avoid common in assignment of traffic to most suitable path
The network congestion that forwarding or load balancing are easy to cause, the customer traffic that priority cannot be protected high, and cannot be guaranteed
Reliable transmission of the high-priority traffic in the whole network.By utilizing Intelligent routing, probe messages can explicitly be specified to walk
Path, so that the state for the equipment being easy on diagnosis path, improves the diagnosticability of network.It is right by utilizing Intelligent routing
When the same destination has mulitpath, when detecting failure, router can be switched at once other paths up.
Using Intelligent routing, router can be easy to carry out link control and policybased routing according to source address.By to existing route
The expansion board clamping of device, can be realized intelligent route selection, and existing net is protected to invest, and reduce improvement cost.
Embodiment eight
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided intelligent route selection table involved in it generates, specific:
In Intelligent routing system, the structure of converting route is divided into four tables and forms together, and four tables are basic routing
Table, intelligent forwarding table, 2-d index table and interface table.
Basic routing table is similar with normal routing table, forms routing entry using destination address and mask as keyword, searches
Basic routing table, each routing entry include a line number in 2-d index table, in the routing table also comprising a matching
The field of type mainly includes following methods: based on using routing mode, based on address base routing mode and based on source
Location routing mode, other modes, which can according to need, to be expanded.Basic routing table is used for according to packet rs destination address longest
Matching, obtains next-hop subclass in a 2-d index table associated with this destination address.
Intelligent forwarding table is the intelligent rules table formed according to matching type, which is made of multiple tables, includes application choosing
Road table, address base table and source address table etc..Using including application type, matching rule, path priority, interface etc. in routing directory
Information；Address base table includes the information such as destination address, address of equal value, path priority；Source address table includes source IP address, path
The information such as priority.Each list item corresponds to 2-d index by searching for acquisite approachs priority, the priority value in intelligent forwarding table
Train value in table.
2-d index table is to obtain interface index according to line number and row number, and line number is obtained according to basic routing table destination address
, row number is each path priority, and priority height then comes foremost, and so on, the definition about priority can basis
Need to be defined, in the present invention, first row indicates the minimum routing of time delay, priority value 0, secondary series and after, table
Show that remaining bandwidth is sequentially reduced, priority is to increase since 1.The corresponding numerical value of row and column indicates next-hop in 2-d index table
Index, not use specific next-hop interface form, since next-hop number and management information are more, using index
Mode.
Interface table indicates specific physical interface information, interface data flow statistics etc..2-d index table intermediate value and interface table
Index value is corresponding, searches outgoing interface table by index in 2-d index table, finds the details of outgoing interface.
Intelligent route selection, which changes conventional routing table, to extend intelligent rules based on the mode that destination address is forwarded, and lead to
The combination of the two is crossed, realizes intelligence forwarding.So that different types of application is walked different paths and is forwarded, foundation can also be realized
The address base of real-time update is forwarded, and in addition be can also be achieved and is carried out safety inspection and forwarding based on source address.Intelligent route selection system
System can further expand routing rule as needed, and when expansion need to only increase corresponding intelligent rules table.
When receiving data packet from equipment interface, for need three layers forwarding data packets be sent to Intelligent routing system into
Row processing matches according to destination address longest in Intelligent routing system, one and this purpose is obtained from basic routing table
The associated entry in address, the i.e. line number of 2-d index table；Then check that the entry needs matched rule, in intelligent rules table
In matched.If needing to match a plurality of rule simultaneously, matched, is chosen with multiple tables in intelligent rules table respectively
The priority that the path priority of highest priority is routed as final data forwarding, the i.e. row number of 2-d index table.It obtains
After the line number and row number of 2-d index table, inquiry 2-d index table obtains next-hop index, according to the index in outgoing interface table
Find corresponding outgoing interface information, carry out data forwarding, while being counted accordingly to the forwarding data of outgoing interface.
Embodiment nine
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided mulitpath and next-hop involved in it, specific:
The multipath of routing calculates mulitpath by various Routing Protocols and generates, and needs to repair conventional routing protocols
Change, in addition to calculating shortest path, also need calculate as far as possible node be not overlapped second be short to the n-th short path (n be configure do not go the same way
Diameter number), form the mulitpath of a routing.If path entry number is inadequate, priority low path in back is overlapped.It is right
In the routing of particular requirement, can be by detection mulitpath after, place it in fixed position.For example, if needing to reinforce time delay most
Short path requirement, can detect the time delay of each paths in the n paths of selection, be determined as highest priority for time delay is most short,
Other paths are according to regular weaves such as most short or remaining bandwidths.
Specific step is as follows:
In each routing, there is n next-hop, this n next-hop derives from mulitpath, to guarantee and existing road
Consistent by agreement, Intelligent routing system calculates a plurality of of a routing after obtaining network node routing iinformation according to the following steps
Path:
(1) shortest path of a certain item routing, the first paths as routing are calculated；
(2) in addition to head and the tail node, the node for having become routed path is excluded, calculates shortest path in remaining node；
(3) in second step, if network is not connected to, the key node being added thereto forms connected network, calculates most short
Path；
(4) it if there is multiple key nodes in third step, is separately added into, after calculating multiple shortest paths, chooses respectively
Required several destination paths；
(5) step 2~4 are repeated, until the path number needed for choosing.
According to above method, to all router-level topology n paths.If required n paths number cannot be got,
The higher path filled out as acquisition of priority, insufficient section are identical with the last item path indexing in route next jump.
Embodiment ten
The embodiment of the present invention is based on a kind of intelligent router route selecting method and dress provided by embodiment one and embodiment two
On the basis of setting, it is further provided multipath priority attribute involved in it and acquisition, specific:
Each routing has the corresponding next-hop index of multiple and different prioritized paths, each path in 2-d index table
Priority is defined as follows: first row priority is time delay minimal path, secondary series and later heat source in 0 corresponding mulitpath
Value of series is incremented by since 1, indicates that remaining bandwidth is gradually reduced, numerical priority value is bigger, and priority is lower.
After calculating n paths according to shortest path, node on each paths is obtained by snmp accordingly forwards and connect
Mouthful remaining bandwidth, least residue bandwidth is as the path remaining bandwidth in each all nodes of paths.Path remaining bandwidth
Bigger, path priority is higher.The 2nd to (n+1)th next-hop in the mulitpath of each routing, according to remaining bandwidth
Size order successively fills.
Due to the dynamic change of remaining bandwidth, the size of remaining bandwidth needs every 5 minutes (settable) once to be updated.
For first time delay shortest path in Intelligent routing system, then need after receiving data packet, by right
Each routing distal end destination is detected, and detection is minimum from which link Forwarding Delay, and detailed process is as follows:
1, after the message that user accesses outer net reaches Intelligent routing system, Intelligent routing system is first looked in message
Purpose IP address.
2, after the destination IP for finding message, Intelligent routing system can send icmp packet to this from the path that n item is selected
Destination address is detected, and usually each of the links send 4 icmp packets.Send the source address of icmp packet for outgoing interface
Location, destination address are the purpose IP address of user's message.
3, by summarizing the average value of 4 icmp packets, Intelligent routing system accounting is calculated from each of the links and sends ICMP report
Text arrives the time delay of destination IP, therefrom selects the smallest link of time delay for the smallest link of user's message Forwarding Delay.
4, after determining minimal time delay path, the path next-hop for being 0 as the routing priority using its next-hop, subsequent need
Wanting the smallest message of time delay all can select to forward from this link.
Certainly the above forwarding (is defaulted to 5 minutes) in the case where the best outgoing interface of time delay does not have aging, when time delay most
After good outgoing interface entry aging, subsequent packet will re-start detection.
Remaining bandwidth threshold value can be arranged in intelligent route selection function in time delay smallest link, once the remaining bandwidth of this link
When reaching the bandwidth threshold of setting, alarm will be generated, the flow of subsequent match to this destination network segment will select other links (surplus
Remaining bandwidth is larger) it is forwarded.
Intelligent route selection function by setting threshold mode, compensate for automatic detection mode because of most of flow from a certain when
Prolong the defect that the smallest link forwards and leads to other link idles, intelligent route selection function is made to be more applicable for the complicated net of existing net
Network environment.
Before being realized by Intelligent routing system once congestion occurs in a link, flow can be switched to other automatically
Chain road.To which link congestion and bandwidth usage are uneven, Logistics networks it is unimpeded.
Intelligent route selection system passes through based on source address, the routing based on application, the address base routing based on automatically updating, base
In modes such as delay detections.It realizes based on application, the routing effect based on address base, based on link circuit condition.
Intelligent routing system is by calculating mulitpath, it can be achieved that real multi-path transmission, in addition when detecting failure
When, Intelligent routing system can be switched at once Protection path up.Using intelligent route selection system, source address inspection can also be achieved
Function, so that the ability that whole network resists attack becomes strong.
Those of ordinary skill in the art be further appreciated that implement the method for the above embodiments be can
It is completed with instructing relevant hardware by program, the program can store in a computer-readable storage medium
In, described storage medium, including ROM/RAM, disk, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of intelligent router route selecting method, which is characterized in that be stored with basic routing table, Intelligent Selection in Intelligent routing system
Road table, 2-d index table and interface map list, which comprises
According to destination address entrained in the data message to routing forwarding, the basic routing table is searched, is obtained described
Line number in 2-d index table；Wherein, each destination address and corresponding destination address are stored in basic routing table described two
Tie up the line number in concordance list；
Search the column in corresponding 2-d index table in the sublist of corresponding types into the intelligent route selection table according to routing policy
Number；
According to the line number and row number in the 2-d index table of acquisition, searches the 2-d index table and obtain mapping value；
The network address of next-hop is searched in interface map list according to the mapping value；
The path for reaching destination address is generated according to the network address of the multiple next-hops found out, and probe messages is specified to test institute
State path；And it is switched over automatically in probe messages feedback path there are when link failure, and by assignment of traffic to suitable road
On diameter；
The sublist of corresponding types includes: using routing sublist and source address sublist in the intelligent route selection table, wherein applies routing
The row number in 2-d index table corresponding to differing transmission protocols is stored in sublist；In source address sublist in storing data message not
Row number in 2-d index table corresponding to homologous address.
2. intelligent router route selecting method according to claim 1, which is characterized in that the different lines of the 2-d index table
Corresponding different transmission requirement, the transmission requirement includes that time delay is minimum, remaining bandwidth is maximum, remaining bandwidth takes second place and/or remains
Remaining bandwidth is small；Wherein, the transmission requirement corresponds to differing transmission protocols and/or the transmission requirement in the application routing sublist
Different source address in the corresponding source address sublist.
3. intelligent router route selecting method according to claim 1, which is characterized in that the routing policy specifically includes:
It is searched from high to low according to application routing sublist and source address sublist priority, if finding qualified knot
Fruit terminates the lookup of the row number in 2-d index table；Alternatively,
It is searched from high to low according to source address sublist and using routing sublist priority, if finding qualified knot
Fruit terminates the lookup of the row number in 2-d index table.
4. intelligent router route selecting method according to claim 1 to 3, which is characterized in that the basic routing table and
Intelligent routing table is stored in ternary content addressing memory TCAM；The 2-d index table and interface map list are stored in static state
In random access memory SRAM.
5. a kind of intelligent router channel selection device, which is characterized in that the intelligent router channel selection device includes basic routing table
Enquiry module, intelligent route selection table enquiry module, 2-d index table enquiry module, interface map list enquiry module and memory module,
It is specific:
The memory module, for being stored with basic routing table, intelligent route selection table, 2-d index table and interface map list；
The basic routing table lookup module, for looking into according to destination address entrained in the data message of routing forwarding
The basic routing table is looked for, the line number in the 2-d index table is obtained；Wherein, each destination is stored in basic routing table
The line number of location and corresponding destination address in the 2-d index table；
The intelligent route selection table enquiry module, for according to routing policy into the intelligent route selection table in the sublist of corresponding types
Search the row number in corresponding 2-d index table；
The 2-d index table enquiry module searches described two for the line number and row number in the 2-d index table according to acquisition
It ties up concordance list and obtains mapping value；
The interface map list enquiry module, for searching the network of next-hop in interface map list according to the mapping value
Location；
The memory module specifically includes ternary content addressing memory TCAM and static random access memory SRAM, then:
The basic routing table and Intelligent routing table are stored in TCAM；The 2-d index table and interface map list are stored in
In SRAM.
6. intelligent router channel selection device according to claim 5, which is characterized in that the intelligent router channel selection device
It further include detecting module, specific:
The detecting module is used for detection failure path, and when link failure occur, switches over automatically, and by assignment of traffic
Onto suitable path.
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| CN107465614A (en) * | 2016-06-06 | 2017-12-12 | 中兴通讯股份有限公司 | A kind of method and apparatus for realizing Border Gateway Protocol two dimension route |
| CN109861915A (en) * | 2017-11-30 | 2019-06-07 | 中兴通讯股份有限公司 | Forward method, apparatus, computer equipment and the readable storage medium storing program for executing of table handling |
| CN110943847B (en) * | 2018-09-21 | 2021-06-18 | 比亚迪股份有限公司 | Vehicle-mounted network access equipment, train and information interaction system |
| CN110620693A (en) * | 2019-09-27 | 2019-12-27 | 南京铁道职业技术学院 | Railway station route remote restart control system and method based on Internet of things |
| CN114500374B (en) * | 2020-11-12 | 2023-07-14 | 中国科学院声学研究所 | Message route forwarding method adopting destination address changed along with route |
| CN113904798B (en) * | 2021-08-27 | 2024-03-22 | 长沙星融元数据技术有限公司 | Multi-group filtering method, system, equipment and storage medium for IP message |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101060482A (en) * | 2007-03-31 | 2007-10-24 | 华为技术有限公司 | A route search method and forwarding system |
| CN101127691A (en) * | 2006-08-17 | 2008-02-20 | 王玉鹏 | A method for implementing stream-based policy routing on network processor |
| CN101695160A (en) * | 2009-10-20 | 2010-04-14 | 清华大学 | Stream directional transmission method based on strategy route |
| CN103780493A (en) * | 2014-01-20 | 2014-05-07 | 清华大学 | Method and system for data forwarding |
| US8880666B2 (en) * | 2010-10-29 | 2014-11-04 | At&T Intellectual Property I, L.P. | Method, policy request router, and machine-readable hardware storage device to select a policy server based on a network condition to receive policy requests for a duration |
-
2015
- 2015-11-25 CN CN201510828560.0A patent/CN105471747B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127691A (en) * | 2006-08-17 | 2008-02-20 | 王玉鹏 | A method for implementing stream-based policy routing on network processor |
| CN101060482A (en) * | 2007-03-31 | 2007-10-24 | 华为技术有限公司 | A route search method and forwarding system |
| CN101695160A (en) * | 2009-10-20 | 2010-04-14 | 清华大学 | Stream directional transmission method based on strategy route |
| US8880666B2 (en) * | 2010-10-29 | 2014-11-04 | At&T Intellectual Property I, L.P. | Method, policy request router, and machine-readable hardware storage device to select a policy server based on a network condition to receive policy requests for a duration |
| CN103780493A (en) * | 2014-01-20 | 2014-05-07 | 清华大学 | Method and system for data forwarding |
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